# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=znver2 -iterations=1500 -timeline -timeline-max-iterations=4 < %s | FileCheck %s
# Each lzcnt has a false dependency on %ecx; the first lzcnt has to wait on the
# imul. However, the folded load can start immediately.
# The last lzcnt has a false dependency on %cx. However, even in this case, the
# folded load can start immediately.
imul %edx, %ecx
lzcnt (%rsp), %cx
lzcnt 2(%rsp), %cx
# CHECK: Iterations: 1500
# CHECK-NEXT: Instructions: 4500
# CHECK-NEXT: Total Cycles: 9003
# CHECK-NEXT: Total uOps: 7500
# CHECK: Dispatch Width: 4
# CHECK-NEXT: uOps Per Cycle: 0.83
# CHECK-NEXT: IPC: 0.50
# CHECK-NEXT: Block RThroughput: 1.3
# CHECK: Instruction Info:
# CHECK-NEXT: [1]: #uOps
# CHECK-NEXT: [2]: Latency
# CHECK-NEXT: [3]: RThroughput
# CHECK-NEXT: [4]: MayLoad
# CHECK-NEXT: [5]: MayStore
# CHECK-NEXT: [6]: HasSideEffects (U)
# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
# CHECK-NEXT: 1 3 1.00 imull %edx, %ecx
# CHECK-NEXT: 2 5 0.33 * lzcntw (%rsp), %cx
# CHECK-NEXT: 2 5 0.33 * lzcntw 2(%rsp), %cx
# CHECK: Resources:
# CHECK-NEXT: [0] - Zn2AGU0
# CHECK-NEXT: [1] - Zn2AGU1
# CHECK-NEXT: [2] - Zn2AGU2
# CHECK-NEXT: [3] - Zn2ALU0
# CHECK-NEXT: [4] - Zn2ALU1
# CHECK-NEXT: [5] - Zn2ALU2
# CHECK-NEXT: [6] - Zn2ALU3
# CHECK-NEXT: [7] - Zn2Divider
# CHECK-NEXT: [8] - Zn2FPU0
# CHECK-NEXT: [9] - Zn2FPU1
# CHECK-NEXT: [10] - Zn2FPU2
# CHECK-NEXT: [11] - Zn2FPU3
# CHECK-NEXT: [12] - Zn2Multiplier
# CHECK: Resource pressure per iteration:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]
# CHECK-NEXT: 0.67 0.67 0.67 0.67 1.00 0.67 0.67 - - - - - 1.00
# CHECK: Resource pressure by instruction:
# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] Instructions:
# CHECK-NEXT: - - - - 1.00 - - - - - - - 1.00 imull %edx, %ecx
# CHECK-NEXT: 0.33 0.33 0.33 0.33 - 0.33 0.33 - - - - - - lzcntw (%rsp), %cx
# CHECK-NEXT: 0.33 0.33 0.33 0.33 - 0.33 0.33 - - - - - - lzcntw 2(%rsp), %cx
# CHECK: Timeline view:
# CHECK-NEXT: 0123456789
# CHECK-NEXT: Index 0123456789 0123456
# CHECK: [0,0] DeeeER . . . .. imull %edx, %ecx
# CHECK-NEXT: [0,1] DeeeeeER . . . .. lzcntw (%rsp), %cx
# CHECK-NEXT: [0,2] .DeeeeeER . . . .. lzcntw 2(%rsp), %cx
# CHECK-NEXT: [1,0] .D=====eeeER . . .. imull %edx, %ecx
# CHECK-NEXT: [1,1] . D====eeeeeER . . .. lzcntw (%rsp), %cx
# CHECK-NEXT: [1,2] . D=====eeeeeER. . .. lzcntw 2(%rsp), %cx
# CHECK-NEXT: [2,0] . D=========eeeER . .. imull %edx, %ecx
# CHECK-NEXT: [2,1] . D=========eeeeeER. .. lzcntw (%rsp), %cx
# CHECK-NEXT: [2,2] . D=========eeeeeER .. lzcntw 2(%rsp), %cx
# CHECK-NEXT: [3,0] . D==============eeeER .. imull %edx, %ecx
# CHECK-NEXT: [3,1] . D=============eeeeeER. lzcntw (%rsp), %cx
# CHECK-NEXT: [3,2] . D==============eeeeeER lzcntw 2(%rsp), %cx
# CHECK: Average Wait times (based on the timeline view):
# CHECK-NEXT: [0]: Executions
# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
# CHECK: [0] [1] [2] [3]
# CHECK-NEXT: 0. 4 8.0 0.3 0.0 imull %edx, %ecx
# CHECK-NEXT: 1. 4 7.5 0.0 0.0 lzcntw (%rsp), %cx
# CHECK-NEXT: 2. 4 8.0 0.0 0.0 lzcntw 2(%rsp), %cx
# CHECK-NEXT: 4 7.8 0.1 0.0 <total>
Codebase Browser
llvm